P1.30. Electric force on a test charge in the field of six point charges. Six point charges, e ach of value Q, are situated at (d, 0, 0), (-d, 0, 0), (0, d, 0), (0, –d, 0), (0, 0, d), and (0, 0, -d). A test charge q located at the origin is displaced by a distance A < d along the positive x-axis. Find an approximate expression for the electric force acting on the charge.

In a physics experiment, we place three charges at the corners of an equilateral triangle, where q1 = 2.75 μC, q2= - 3.45 μC, and q3 = 3.25 μC. If I were to measure the electric field right between charges q1 and q2, what would I find?

The electric field at a point in space is definedas the force per unit charge at that point inspace. We can write the electric field E ofa charge q at a distance d from that charge,experienced by a charge Q, asE =FQ= kqd2.The electric field has a direction such that itpoints toward negative charges and away frompositive charges. Suppose your rub a balloonin your hair and it acquires a static charge of−2 × 10−9 C.What is the magnitude of the electric fieldcreated by the balloon at a location 1 m duenorth of the balloon? Coulomb’s constant is9 × 109 N · m2/C2.Answer in units of N/C.   You hair acquired an equal amount of positivecharge when you rubbed the balloon on yourhead.What is the strength of the electric fieldcreated by your head at the location of yourfeet, 1.5 meters below?Answer in units of N/C.

Given a charge Q1=50nC located at the XY coordinates (5m, 10m) and a charge Q2= -20nC located at the X, coordinates (-3m.-1m). The field point has coordinates (-3m, 4m). Find the Total Efield?